Check Point Advisories

MailEnable HTTP Authorization Header Buffer Overflow (CVE-2005-1348)

Check Point Reference: CPAI-2005-238
Date Published: 2 Aug 2011
Severity: Critical
Last Updated: 22 Jun 2017
Industry Reference:CVE-2005-1348
Protection Provided by:

Security Gateway
R80, R77, R76, R75

Who is Vulnerable?
Vulnerability Description MailEnable is a mail server application designed to run on the Microsoft Windows platform. MailEnable bundles a server component that supports the HTTPMail protocol. This protocol allows an email client, such as Outlook Express, to view, send, and manage electronic messages. The HTTPMail protocol is essentially a standard WebDAV (Web Distributed Authoring and Versioning) service.There exists a buffer overflow vulnerability in the way MailEnable processes the HTTPMail protocol. This issue is caused by insufficient boundary checking when data is copied into a fixed size buffer. This vulnerability can be exploited to execute arbitrary code on the target system with privileges of the HTTPMail service process.In a simple attack case aimed at creating a denial of service condition, the affected service will terminate. If the service is not configured to restart automatically, then the MailEnable HTTPMail functionality will be unavailable until the server is restarted manually.In a more sophisticated attack scenario, where the malicious user is successful in injecting and executing supplied code, the behaviour of the system is dependent on the nature the injected code. Any code injected into the vulnerable component would execute in the security context of the service process, normally System level.

Protection Overview

This protection will detect and block attempts to exploit this vulnerability.Note that in order for this defense to protect your MailEnable server, you will need to configure port 8080 (which is also the HTTP proxy port) to work with the HTTP protocol. You need to do the following:1. In the Services tree, click on TCP > HTTP_and_HTTPS_proxy. The TCP Service Properties window opens.2. Click on Advanced. Select the Protocol Type: HTTP.

In order for the protection to be activated, update your Security Gateway product to the latest IPS update.For information on how to update IPS, go to SBP-2006-05, click on Protection tab and select the version of your choice.

Security Gateway R80 / R77 / R76 / R75

  1. In the IPS tab, click Protections and find the MailEnable HTTP Authorization Header Buffer Overflow protection using the Search tool and Edit the protection's settings.
  2. Install policy on all modules.

This protection's log will contain the following information:

Attack Name:  Application Servers Protection Violation
Attack Information:  MailEnable HTTP authorization header buffer overflow

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